Stop mechanism for phonographs.



W. R. BOYER.

STOP MECHANLSII FOR PHONOGRAPHS. APPLICATION FILED IAY 1a. 1915.

1,225,217. Patented May 8,1917.

ZIZZI' OFFICE.

WILLIAM R. BOYER, OF IPHILADELPHIA, PENNSYLVANIA.

STOP MECHANISM FOR PHONOGRAPHS.

' Specification of Letters Patent.

Patented May 8, 1917.

Applicationfiled May 18, 1916. Serial No. 98,242.

To all whom it may concern Be it known that 1, WILLIAM R. Borne, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State oi Ie11nsylvania, have invented certain new and useful Improvements in Stop Mechanism for Phonographs, of which the following is a specification.

My invention consists of improvements in stop mechanism for phonographs or other talking machines, and is particularly serviceable for use on talking machines which employ'disk records for the reproduction of sound.

My invention consists primarily of an improved form of stopping device which actuates automatically to stop "ihe ,operating mechanism of a talking machine when the record has been reproduced, and thereby prevents the rotation ofthe record after a the record has been reproduced.

One object of'my invention is to so construct a device of the above described type which may be adjusted so as to automatically stop the mechanism of a talking machine after the record has been reproduced, the adjusting means being such as to be eapable of variation to suit records of difierent sizes or which require different lengths of time to reproduce.

Another object of-my invention is to so construct my improved stopping device that itmay be casily'and quickly adjusted to stop any sized record at the proper time which is at the conclusion of the reproduction.

A still further object is to so make my improved device that it will'be durable and can bemanufactured at a small cost.

A-further object is to so construct my invention that it may be applied to machines now on the nnirket without changing the construction of said machines.

These objects,"and' other advantageous ends which Wiilbe described hereinafter, 1

attain in the following manner, reference being-had to the accompanying drawings in which-- i Figure 1 is a top plan view showing sufficient of a talking machine to illustrate Fi 2 1s a sectional view on the line 2-2 of Fig. I drawn on an enlarged scale.

Fig. 3 is a top plan view of an actuating arm which Iemploy.

Fig. 5 is a sectional elevation of similar nature to that shown in Fig. 2, but showing a modified form of my invention.

Referring to the drawings 1 is a cabinet having therein mechanism (not shown) for rotating a turn table 2, upon which the record disk 3 is positioned. A sound box 4 having a member which engages the grooves in the record 3 to reproduce the sound thereof in the usual manner, is secured on the'end of a horn or tube 5.

A stopping lever 6 and a starting lever 7 are mounted on the top of the cabinet 1, and these levers may be connected in any manner desired with mechanism so that when the lever 6 is pushed in the direction of the arrow shown in Fig. 1, the mechanism will be stopped and when the lever 7 is actuated, the mechanism will again be started.

.Theseelements as above described are common to machines now on the market, and do not form a part of my invention, since my invention may be used in connection with any lever which when pushed will operate to stop the mechanism of the ma-- chine. 'Also, on certain machines now on the market, a shaft 8 is employed, and this shaft 8 is connected by mechanism so that a movement of the horn or tube 5 inwardly toward the center of the record eiiects a r0- tary movement of said shaft 8, and a single lever is ordinarily connected to this bar .8 and designed to contact with and move thb lever 6 after the horn and sound box has moved inwardly toward the center of the dish a predetermined distance.

instead of providing a solid or single 'piece lever on the shaft'S, I provide an arm 9 which is secured to the shaft 8, and so form the end of this arm 9 as to provide a hole/10 and a series of grooves 11 which are radially disposed frointhe hole 10.

A. disk or plate 12 has a hole 13 and said which are radiallydisposed around the hole 1.3 and recess 14.

The ribs 15 are of such size as to engage the grooves 11 of the arm 9 and the holes 16 and 18 of the arm 9 and 12 respectively will, when the ribs of the said plate 12 are within the grooves 11 of said arm 9, be in alinement.

A pivot bar 16 extends through these holes Hand 13 and has a thuinb nut 17 secured to it, and.this nut 17 is provided with a flange 18 designed to engage the upper surface of the disk 12. As shown in Fig. 2 of the drawing, the pivot bar 16 is directly secured to the. disk 12, either by soldering or in any other manner, so that when the pivot bar 16 is turned, the disk 12 will also turn. The lower end of the pivot bar 16 is threaded and provided with two nuts 19 and 20, and a spiral expansion spring 21 surrounds the pivot bar 16 and bears on the lower surface of the arm 9 and the upper surface of the nut 19.

The nut 20 serves to act as a check or lock to prevent the nut 19 becoming loose. The spring 21 normally acts to keep the ribs 15 of the disk 12 within the grooves 11 on the arm 9, so that the disk 12 will not rotate. However, since the pivot bar 16 is free to move within the hole 10 of the arm 9, if the thumb nut 17 is raised so as to compress the spring 21 and to move the ribs 15 out of the grooves 11, the disk 12 may be rotated byturning the thumb nut 17, and as the disk 12 is eccentrieally mounted, a greater or less portion of the disk 12 may be made to extend beyond the end 22 of' the arm 9.

It will thus be seen from Fig. 1, that by having the disk 12 in such position as to engage and move the lever (i and also by mounting the eccentric 12 as just described, the lever 6 may be actuated at different movements of the arm 9. For example, if the disk 12 is so turned that the greatest portion overlaps the end 22 of the arm 9, the arm 6 will be moved sooner than if the disk was so turned as to have a smaller portion extending over the end 22 of' the arm S), even though it is considered that the shaft 8 rotates at the same speed in both instances. From this it will be seen that the disk 12 may be made to operate the lever (3 at different times during the inward travel of the sound box 4 toward the center of the disk, and by so gaging the position of the disk 12, the mechanism may be stopped at the conclusion of different sized records.

The operation of my device is as follows:

After the record has been placed upon the turn table 2, the arm 5 is manually moved to the groove on the disk which is directly inside of the last reproducing groove. This movement will cause a H'l't. l)()n(lll],' movement of the shaft 8 and disk 12 toward the lever 6, and when in this position. the disk 12 may be rotated as above described until a portion of its edge just touches or nearly touches the lever (3. The thumb nut 17 is then released, and the spring 21 holds the disk in'this adjusted position.

The arm a is then moved outwardly to the starting groove on the disk, and by this movement the arm 9 will be moved into the position as shown in full lines in Fig. 1.

During the operation of the machine, the arm 5 travels slowly inwardly, and the arm 9 has a corresponding movement until the disk 12 strikes the lever 6, which it will do when the reproducing member engages the groove on the record as above stated.

In the form of my invention shown in Fig. 5, the disk 12 is provided with the ribs, and the arm 9 is provided with the grooves in the manner described above, but the pivot bar is of a different construction, and is free to move within the hole The pivot bar, which in Fig. 5 is indicated by the numeral 24, has its lower end threaded at 25, and this threaded end ongages a threaded owning 26 in the arm 9, so that when the thumb nut 27 is turned, the threaded end 25 will move either into or out of the threaded opening '26 for the purpose of adjusting the eccentric 12.

While I have described my invention as.

taking a particular form, it will be understood that the various parts of my inven-' tion may be changed without departing from the s irit thereof, and hence I do not limit myse f to the recise construction set forth, but consider t at I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. The combination in a talking machine having a record, mechanism for rotating the record, means movable to stop said mechanism, of a movable member, an arm secured to said member, a. second member carried by and adjustable into different positions relative to said arm, and means for lockin said latter member against relative accit ental movement with respect to the am, said latter means being manually movable to permit adjustment between the arm and said second member, said second member being 3. The combination in a talking machine having a rotatable snpport, a record on said support, a'm'oi able member, a stopping lever movable to eti'ect the stopping of said support, of airarm on said second member,

and a plate eceentrically mounted on said.

I lever movable to efl'ect the stopping of said support, of an arm-secured to said rotatable member and having a series of grooves therein, a plate having a series of ribs designed to engage the grooves on said arm, and means for adjiistably clamping said plate to the arm, said-means being operative to permit said plate to be moved away from the arm and turned into different positions, said plate being designed to engage said stopping lever to stop the rotation of said support,substantially as described.

5. The combination in a talking machine having a rotatable support, a record on said support, a rotatable member, and a stopping le-ver movable to effect the stopping of said support, of an arm secured to said rotatable member and having a series of grooves therein, an ecceiitrieally, mounted plate having a series oi. ribs designed .to en gage the grooves on said arm, and means for adjustably clamping said plate to the arm, said means being operative to permit said plate to be moved away from the arm and turned into dillereiit positions, said platebeing designed tov engage said stopping lever to stop the rotation of said support, substantially as i'lesci'ibed.

(3. The combination in a talking machine havinga rotatable support, a record on said support, a rotatable member, and a stopping lever movable to eii'ect the stopping of said support, of an arm having a hole therein, and a plurality of grooves adjacent said hole, a disk having a hole located eccentrically to the center of said disk, and a series of ribs adjacent said hole in the disk,

a pivot bar extending through said holes in the disk and arm, and means for adjustably securing said pivot bar whereby the ribs 011 the disk e itend within the grooves on the arm, and the disk and arm are adjiistably clamped together, substantially as described. 7. The combination in a talking machine having a rotatable support, a record on said support, a rotatable member, and a stopping lever movableto e'fl'ect the stopping of said support, of an arm having a hole therein and a plurality of grooves adjacent said hole, a-disk having a hole located eccentrieally to the center ot said disk, and a series of ribs adj a'cent said hole in the disk, a pivot 7 bar extending through said holes in the disk and arm, means for adjustably securing said,

pivot bar whereby the ribs on the disk extend within the grooves on the arm and the disk and arm are adjustably'clamped together, and a spring operative upon said ad; justable securing means whereby said disk and arm are resiliently clamped together,

substantially as described.

WILLIAM R. BOYER.

Witnesses RHODA F. GiLLiiis, Cir-is. E. Po'r'rs. 

